Washington GuideOften referred to by its full title, Washington State, to distinguish it from national capital Washington, D.C. on the other side of the USA, Washington offers rugged coastline, deserts, forests, mountains, volcanoes, and hundreds of coastal islands to explore. HotelsFind hotels in Seattle, Ashford, Bellingham and more. SeattleSeattle, Washington, is the largest city in the Pacific Northwest. Located between Puget Sound and Lake Washington in King County, of which it is the county seat, and overlooking Elliott Bay, Seattle is nicknamed The Emerald City. Puget SoundPuget Sound is an estuary, a semi-enclosed body of water in which salt water from the nearby Pacific Ocean mixes with fresh water … Kitsap PeninsulaThe Kitsap Peninsula is in Washington State in the Pacific Northwest of the United States of America. North CascadesThe North Cascades is a region of Washington. The North Cascades can be divided into two distinct subregions due to the Cascade … Columbia River PlateauThe Columbia River Plateau is a region of Washington. The "Tri-Cities Area" consists of Kennewick, Richland, and Pasco, set at the confluence of the Yakima, Snake, and Columbia rivers. Olympic PeninsulaThe Olympic Peninsula is a region of the state of Washington in the United States of America. San Juan IslandsThe San Juan Islands are a region in Washington State. The San Juan Islands are a scattering of forested islands in the serene waters to the north of Puget Sound in Washington state, adjacent to British Columbia. Southwest WashingtonSouthwest Washington is a region of Washington. For our purposes, the Southwest Washington region consists of Cowlitz, Clark, Lewis, Pacific, Skamania, and Wahkiakum counties. PalouseThe Palouse is a region of Washington. For our purposes, the Palouse consists of Spokane, Whitman, Columbia, Garfield, and Asotin counties. Mount Rainier National ParkMount Rainier National Park is a United States National Park located in the American state of Washington, some 54 miles south-east of Seattle. Northeast WashingtonThe Northeast Washington region has a lot to see and do. The nearest airport with commerical service is the Spokane International Airport, just south of the region. Cascade MountainsCascade Mountains is a region of Washington State in the United States of America which resides within the Cascade Mountains.